Paper-making machinery



N0. su,303. Patented Sept. 27, I898. w. w. WELLS.

PAPER MAKING MACHINERY.

(Application filed Mar. 16, 1898.)

(No Model.)

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Ni'rnD STATES WVILLIAM l/VESLEY \VELLS, OF SANDY HILL, NEW YORK. I

PAPER-MAKING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 611,303, dated September 27, 1898.

Application filed March 1893' T to whom it may concern:

Be it known that I, WILLIAM WEsLEY 'VVELLS, a citizen of the United States, residing at Sandy Hill, in the county of Washington and State of New York, have invented certain new and useful Improvements in Paper-Making Machinery; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in paper-making machinery, and particularly to the construction of a beater for imparting a succession of blows to the traveling conveyor-felt at some point in its path of movement intermediate between that at which it delivers the pulpfihn to the winding-roll and that at which it again receives a supply from the film-making roll. The purpose of this beater, cooperating with a water-jet, is to'detach from the conveyer-felt any particles of wood fiber that may have adhered thereto after passing the winding-roll, so that the felt will alwayspresent a clean and unobstructed smooth surface as it comes into operation at the filmmaking roll.

In the accompanying drawings, Figure 1 represents a side elevation of a machine embodying my invention. Fig. 2 represents a plan view, partly in section, of my improved beater. Fig. 3 represents a side elevation of one of the beater-bar spiders and illustrates the means employed for securing the beaterbars therein. Fig. 4 represents an edge View of one of said spiders, and Fig. 5 represents a partial longitudinal section showing one of the spiders keyed upon the beater-shaft.

Similarletters of reference indicate similar parts throughout the several views.

Referring to the drawings, a indicates the vat, which receives the paper-stock, and b the suction-roll, of the usual character, upon which the paper-film is formed and from which it passes to the conveyer-felt cand thence to the pressure-roll (1, upon which it is-wound until a blanket of the desired thickness is formed and detached, as is well understood in the art.

After delivering the paper-film to the winding-roll cl the conveyer-felt c on its return Serial No. 674,054. (No model.)

travel to the film-roll passes my improved beater, which is provided with a shaft 6, driven by the pulley 7a or thelike, and mounted in suitable bearings, as shown. Upon the shaft e are arranged at convenient distances with radial arms m, forked at their outer ends and provided thereat with recesses 71' for the reception of tubular beater-bars s. It will be observed that the contour of the recessesn is such that the tubular beater-bars must be inserted longitudinally in order to enter them, in which position they are overlapped beyond their longitudinal centers by the forked arms, as clearly appears in Fig. 3. The tubes are therefore held securely against all danger of being thrown out of the recesses 01 by centrifugal force and require no additional securing devices for that purpose. To guard against their longitudinal shifting, however,'pins 1' pass through the forked ends and through the tubes; but even these are unnecessary for-the intermediate spiders.

On reference to Fig. 1 it will be noted that the beater-bars bear such a relation to the conveyor-felt as to impart to the'latter a succession of impact-blows at a point immediately adjacent to the water-jet, whereby any adhering wood fibers are loosened and detached from the felt on its return travel to the suction-roll.

Should any of the .bars require replacement or repair, this may be readily effected by removing the retaining-pins and sliding the bar in question longitudinally from the recesses. When the impact surface of the bars becomes worn, it is merely necessary to remove the pins 0 and revolve the bars within their bearings in the spiders suiiicientl'y to present a new impact surface. Where the bars are cylindrical, this maybe done without removing them at all from their bearings in I the spiders. The duration of available use of the beater-bars is correspondingly multiplied by the number of new surfaces which can thus be successively employed.

Having thus described my invention, What I claim is 1. A beater for paper machinery, comprising a shaft, spiders mounted upon the shaft and provided at their outer ends with forked arms forming beater-bar recesses, and beaterbars revoluble within said recesses, the contour of the recesses being such that the forked arms overlap the beater-bars and hold them against centrifugal expulsion.

2. A beater for paper-making machinery, comprising a shaft, spiders mounted upon the shaft and provided at their outer ends with forked arms forming beater-bar recesses, and beater-bars revoluble within said recesses,

the beater-bars being cylindrical and the recesses being greater than a semicylinder.

3. A beater for paper-making machinery, comprising a shaft, spiders mounted upon the shaft and provided at their outer ends with forked arms formingbeater-bar recesses, and beater-bars revoluble within said recesses, the contour of the recesses being such that the forked arms overlap the beater-bars and hold them againstcentrifu gal expulsion, and pins passing through the forked arms and beater-bars, to prevent the latter from sl1ift ing longitudinally.

In testimony whereof I afiix my signature in presence of two witnesses.

WILLIAM WESLEY WELLS.

Witnesses:

HENRY DOOLITTLE, ARTHUR JAMES TIDMARSH. 

